9. 10) If x= 340' and yo = -2
and y. is equal to
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1
Answer:
Average weight of three men X,Y and Z=75 kgs.
∴ Total weight of three men X,Y and Z=75×3=225 kgs.
A joins the group and average weight =80 kgs
∴ Total weight of this group =80×4=320 kgs.
∴ weight of A=320−225=95 kgs.
∴ weight of B is 5 kg more than A.
∴ weight of B=95+5=100 kgs.
Total weight of X,Y,A and Z=320 kgs.
Total weight of X,Y,A,B and Z=320+100=420 kgs.
Total weight of Y,Z,A and B=85×4=340 kg.
∴ weight of X=(420−340)=80 kgs.
Answered by
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Answer:
the guy who has done above is right so no neet of solving again
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